# Google Postmaster Tools: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 34 judge labels across 1 category by 13 of 14 models. Page: https://www.gane.ai/index/gtm/vendors/google-postmaster-tools

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Email deliverability and testing tools](https://www.gane.ai/index/gtm/marketing/email-deliverability-and-testing/index.md) | 10% | 2 | 6% | 34 |

## What the models said for it

- "For maximum budget efficiency, start with Google Postmaster Tools and MXToolbox, which are both free" (Claude Haiku 4.5, Email deliverability)
- "Best first step for monitoring Gmail delivery, spam reports, authentication, and delivery errors." (GPT-6 Luna, Email deliverability)
- "If you are starting out, begin with Google Postmaster Tools (free, essential for Gmail data)" (Qwen 3.7 Flash, Email deliverability)
- "1 | Google Postmaster Tools | Free | Set up and monitor spam rate & authentication" (GLM 4.7 FlashX, Email deliverability)

## And against it

- "tools such as Google Postmaster Tools are valuable, but Gmail data can be delayed or unavailable at low volume" (Perplexity Sonar, Email deliverability)
- "valuable if you send enough to Gmail to get data, but it's not a full inbox placement tester" (GPT-5.4 mini, Email deliverability)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 1 | 1 | 0 | 0 | 2 |
| GPT-5.4 mini | 0 | 0 | 0 | 1 | 1 |
| Gemini 3.5 Flash | 1 | 1 | 0 | 0 | 2 |
| Perplexity Sonar | 0 | 4 | 0 | 1 | 5 |
| Grok 4.20 | 1 | 2 | 1 | 0 | 4 |
| Mistral Small | 0 | 2 | 0 | 0 | 2 |
| DeepSeek V4 Flash | 1 | 3 | 0 | 0 | 4 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 1 | 1 | 0 | 0 | 2 |
| Kimi K2 | 0 | 1 | 0 | 0 | 1 |
| GLM 4.7 FlashX | 1 | 1 | 0 | 0 | 2 |
| MiniMax M2.5 | 1 | 0 | 0 | 0 | 1 |
| GPT-6 Luna | 1 | 2 | 1 | 0 | 4 |
| Muse Glimmer 30B | 0 | 4 | 0 | 0 | 4 |

## Sources returned with these answers

The sites and pages cited by the answers that named Google Postmaster Tools, from 83 of the 84 answers that named it (only the models that return a source list).

### Domains cited

- unspam.email: 34
- prospeo.io: 30
- g2.com: 26
- salesdorado.com: 26
- emailtooltester.com: 25
- glockapps.com: 24
- mailtester.com: 23
- myemailverifier.com: 23
- softwaresuggest.com: 21
- toolradar.com: 21

### Pages cited

- https://myemailverifier.com/blog/email-deliverability-tools: 23
- https://unspam.email/articles/email-deliverability-softwares: 23
- https://sendlayer.com/blog/best-email-deliverability-tools: 19
- https://salesdorado.com/en/inbound-marketing/email-testing-tools: 18
- https://omnisend.com/blog/email-deliverability-tools: 16
- https://softwaresuggest.com/email-deliverability-tools: 16
- https://toolradar.com/best/email-deliverability/for/small-businesses: 16
- https://loops.so/resources/best-email-deliverability-tools: 15

## The company

Google; https://google.com; Mountain View, California, United States; founded 1998; part of Alphabet Inc.. From Wikidata, fetched 2026-09-14.

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/gtm.